N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Kim Municipality, Rao Bun stream around point 18º23'39''N, 105º15'12''E. Primary broad-leaved evergreen closed wet forest on very steep shale slopes of river canyon at elevation about 300 m a.s.l. Lithophytic fern on wet rocks and bluffs along river. Very common.
Record creation: 2026-03-01, Аверьянов Леонид ВладимировичCitation: Specimen LE 01203796 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01203796